Which Sequence Correctly Ranks the Regions of the Electromagnetic Spectrum

question 2

Multiple Choice

Which sequence correctly ranks the regions of the electromagnetic spectrum in order of increasing energy?
1) infrared 2) ultraviolet 3) radio wave

• A) 3 < 1 < 2
• B) 3 < 2 < 1
• C) 2 < 1 < 3
• D) 1 < 3 < 2

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Definitions:

Input Module

A component of a modular PLC or control system that receives signals from input devices, such as sensors, and converts them into a form that the processor can use.

Output Module

A component in a control system that facilitates the transfer of digital or analog signals from the controller to actuating devices.

Open Switch

A switch that is in a default state of breaking the circuit, preventing the flow of electrical current until it is closed.